How to create a 1 one column query based on another query without duplicate the query ?

[sebastienke]

Hi, 

I have a long query (#1) resulting in a multi column table.

I would like for different reasons to create a new query (#4) wich is the copy of column A of query #1 and to keep query #1 in my datamodel (so i dont want to delete others columns to get my 1 column query).

But all the solutions I have found (for example : right click on the column and choose "add as new query") results to execute a 2nd time the query #1 and to keep the column A as final step. But this also results to double the time needed to load my data model.

Is there anyway to copy paste my column A directly in a new query ?

To be more specific, I have 3 FACT tables that are 3 different queries but in all of them, I have a common column (column A).

In order to create a DIM query (#4) with masterdata, I want to get first all the distinct values of column A of query #1 #2 and #3.

Why I want to do that? because I just want to download from a SAAS cube the values corresponding to my columns A and not the 100000000000 values that are in it.

Thank you for your help 🙂

[HotChilli · Accepted solution]

Make a new blank Query.

Paste this (with your table name) in the advanced editor:

let
    Source = #"TableX"[col1]
in
    Source

 That will give a list (which you can convert to table from the interface)

[sebastienke]

Thank you guys

I have also discovered the "reference" function which works also. 

[HotChilli · Accepted solution]

Make a new blank Query.

Paste this (with your table name) in the advanced editor:

let
    Source = #"TableX"[col1]
in
    Source

 That will give a list (which you can convert to table from the interface)

[Anonymous · Accepted solution]

let
    Source = #"TableX"[[col1]]
in
    Source

using the double [[    and     ]] you get a column-table directly.

But I don't think this solves the problem of performance

Qualche miglioramento si può ottenere usando Table.Buffer  to wrapp the column-table